Compensating music roll or spool.



Np. 747,859. j PATBNTBD DBO. 22, 1903.

' G. H. DAVIS.

GOMPBNSATING. MUSIC ROLL 0R SPOOL.

APPLIoAToN Hummm. 27. 1903.

No 149ML.

UNITED STATES Patented December 22, 1903.

PATENT (OFFICE.

COMPENSATING MUSIC ROLL OR SPOO-L.

SPECIFICATION forming' part 0f Lettersl Patent N o. 747,859, dated December 22, 1903.

' Application iiled February 27, 1903. Serial No. 145.350. (No model.)

.To @ZZ whom it may concern: I

Be it known -that I, GEORGE HowLETT DA- VIS, a citizen of the United States, residing at West Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Compensating Music Rolls or Spools; and I dohereby declare the following to be a full, clear, and exact'descript-ion Vof the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to certain new and useful improvements in music rolls or spools for perforated note-sheets employed in connection with automatically-operated musical instruments; and it has .for its object the ordinary wooden spools having fixed end caps or iianges (which spools as usually made are of a width equal to that of the sheets) and such expansion takes place, the opposite longitudinal edges of the sheets bear tooY much upon the endcaps or iianges of the spools,which tends to crumple and tear the sheets. As it is necessary that themusic-sheets shall be accurately and evenly guided over the tracker or selector fingers in order to secure a proper register of the perforations with the tracker-ducts or. the selector-fingers,

as the case may be, this crumpling and tearing of the edges of Y the sheets renders such guiding uncertain and unreliable. This is due to the fact that the sheets arel thus rendered considerably narrower in width than the rolls or spools, and hence theyvwill not wind evenly.

It is the purpose of this invention to remedy these defects by providing a roll or spool composed of a tubular spindle formed of a material, such as paper, that is itself capable.

.of longitudinal'expansion and vcontraction due to atmospheric changes, such expansion and contraction being coextensive with the Itraction due to atmospheric changes.

variations in the width ofthe music-sheetdue to the same causes, which music-sheet. is secured4 at one end to the said tubular spindle.

It is a further purpose of the invention to ssl provide a novel manner of attaching the end tached to the tubular spindle., Fig. 3 is a de` tail perspective view of oneof the end plugs,

. and Fig. 4 is aplan view ofa complete spool having a perforated music-*sheet partially wound thereon. Referring now tothe drawings, wherein like numeralsof reference indicatecorrespending parts throughout the several views, 1 indicates a tubular spindle jformed of ysome suitable material or composition of matter capable of longitudinal expansion and con-` Inthe present instance .the tubular spindle is representedas being made of a sheet of paper wound upon itself, and while I have shown but two plies or windings it will be obvious that I may increaseor decrease this number as occasion may require or according tothe thickness or quality of paper employed.

Fitted toeach end of the tubular spindle 1 is an end cap or flange 2, said end caps or flanges being each provided with a Vcentral bore, or opening suiiiciently largeto receive the ends/of the spindle and which bores or openings are` preferably, but not necessarily,

slightly tapered or coned inward toward the center of the spindle, as more clearly shown in Fig. 1. Before applying the end caps or flanges to the spindle I prefer to dip the ends of the latter in glue, so that a firm union of the parts will result. Plugs 3 are then forced into the open ends of the tubular spindle in such manner thatthe ends of the latter will be firmly gripped or clamped between the end caps or flanges and the plugs, wherebya IOO rigid structure is provided. The plugs 3 are by preference slightly tapered, so that when they are driven home the end caps or flanges, will be held in place more securely. Before inserting the plugs 3, as described, I prefer to dip them in glue, so that they will be more securely held in place.

As shown in Fig. 3, the plugs 3 are provided with longitudinal peripheral grooves 4, extending from end to end thereof, the said grooves constituting Ventilating-passages for the tubular spindle, since they lead directly into the same, as more clearly shown in Figs. l and 2. Each plug 3 has secured thereto and projecting outward from the outer end thereof a journal-pin 5, one of which pins is provided With the usual wings 6.

The perforated-paper music-sheet v7 is secured at one end by pasting or otherwise directly to the tubular spindle 1, as seen in Fig.2.

By constructing a music roll or spool as herein shown and described it will be seen that should expansion or contraction take place due to atmospheric changes such eXv pansion and contraction will affect the roll or spindle and the music-sheet alike. Hence there can be no overrunning or crowding of the music-sheet upon the end caps or anges, resulting in crumpling or tearing of the edges of the sheet. Furthermore, the said music-sheet will be free to wind evenly and smoothly upon the spool at all times, so that a true and perfect register of the perforations with the tracker-ducts or selector-lingers will result. Again, a spool or roll constructed according to the present invention possesses many other advantages from a commercial view-point in that it is light, durable, simple in construction, and inexpensive to manufacture.

What I claim is- 1. A music-sheet spool capable of longitudinal expansion and contraction due to at mospheric changes, said spool comprising a tubular spindle formed of paper, heads or flanges at opposite ends of the spool, each having a central opening into which an end of the spindle is inserted, means for attaching the heads to the spindle comprising plugs fitted tightly in the opposite ends of said spindle whereby said ends are securely clamped between the plugsand the walls of the openings in the heads,and a journal-pin carried by each plug.

2. A music-sheet spool, comprising a tubular spindle formed of a material capable of longitudinal expansion and contraction due to atmospheric changes, end caps or flanges tted over the opposite ends of said spindle,

means for securing said end caps in position comprising plugs fitted in the ends ofthe spindle and serving to tightly inclose the said ends between the end caps and plugs, and a journal-pin carried by each plug.

3. A music-sheet spool, comprising a tubular spindle formed of paper, end caps fitted over the opposite ends of said spindle, conical plugs tted in the open ends of the spindle and serving t-o clamp the said ends between the end caps and plugs, and a"journalpin carried by each plug.

4. A music-sheet spool, comprising a tubular spindle formed of paper, end caps fitted over the opposite ends of said spindle, peripherally-grooved plugs fitted in the open ends of said spindle, said plugs serving to clamp the said ends between the end caps and plugs, and a journal-piu carried by each plug.

5. A music-sheet spool, comprising a tubular spindle formed of a material capable of longitudinal expansion and contraction due to atmospheric changes, end caps or flanges fitted over the opposite ends of said spindle, means for securing said end caps in position comprising plugs tted in the ends of the spindle and serving to tightly inclose the said ends between the end caps and plugs, a journal-pin carried by each plug, and a musicsheet secured at one end to the said tubular spindle.

6. A music-sheet spool, comprising a tubular spindle formed of material capable of longitudinal expansion and contraction due to atmospheric changes, end caps or flanges titt-ed over the opposite ends of said spindle, means for securing said end caps in position comprising plugs fitted in the ends of the spindle and serving to tightly inclose the said ends between the end caps and plugs, and suitable journaling means at each. end of the spool.

7. A music-sheet spool, comprising a tubular spindle formed of material capable of longitudinal expansion and contraction due to atmospheric changes, perforated end caps fitted over the opposite ends of said spindle, means for securing said end caps in position comprising plugs tted in the opposite ends of the spindle and serving to tightly inclose the said ends between the end caps and plugs, and a journal-pin at each end of the spool.

In testimony whereof I affix my signature in presence of two witnesses.

EsTELLE JORALEMON, J. FRED BERSTECHER.

IOC

IID 

